An easy way to test the New Firefox Beta look and feel before it's released

There is now an easy way to review Firefox user interface changes without even installing the new version. "How is that possible?" you might ask. We have a collection of hundreds of screenshots of the new Firefox in various different configurations (affecting features such as tabs, toolbars, themes, customization mode, and the new menu) that are ready for you to review.

A random screenshot will be displayed where you can simply identify any visual issues related to the new user interface that you may see. Simply drag to select the region of the image and add a comment (and optionally a bug number). See an example.

When you're done reviewing that image, simply click the button to get another and go to step 2. Endless fun ensues!

Of course, installing Firefox Beta, testing the functionality and filing bugs is still really valuable and encouraged. Areas to focus on include the new customization mode, menu panel, tabs, and Firefox Account Sync.

Yeah, I noticed this happened to some people from looking at the server logs. My guess was that the software didn't properly handle certain characters in the nickname. If you clear your cookies and choose a different nickname it should work.